Russia's Investigative Committee launched a "terrorism" probe on Feb. 2 against the commander of Ukraine's 19th Separate Missile Brigade over a deadly strike on a boarding school being used to shelter civilians in Sudzha,

The Ukrainian army said four people were killed and dozens - many of them elderly - were injured in the town of Sudzha in the Kursk region, which has been under Ukrainian control for five months. More than 80 people are reported to have been rescued from the building.

Ukrainian forces on Sunday launched a new offensive inside Russia's western Kursk border region, going on the attack with substantial forces.

"At the time of the attack, dozens of local residents were inside the building preparing to evacuate," Ukraine's military said on Feb. 1, adding that nearly 95 people could be trapped under the rubble.

Ukraine accused Russia on Saturday of killing four people in a strike on a boarding school sheltering civilians in the Kursk region town of Sudzha, which Kyiv has occupied for over five months. Kyiv launched a surprise cross-border offensive into Russia's Kursk region last August,